Not sure how technically expert you are in cryptocurrencies, and again, I am no longer part of any project, so I might not give accurate data, however, unless ETN is controlling the nodes that can validate its operations “anyone can mine”, however, what was done when the NGO announcement was shared, is that they increased the difficulty for mining so much, that it would just be “non-valuable” to buy CPUs/GPUs/ASICs to do ETN mining. So, no one would be mining…
But, if you still want to mine… you MUST be a NGO that probably received by donation (or can tax break) the hardware and quite probable the electricity bill. So, all your benefits for mining are 100% gains.
It would be great if someone has first hand information to confirm this, but I think that this “Proof of Responsabilty” if I recall correctly was called, was an amazing approach for ETN.